Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Cantera Opal Iolite most commonly occurs in

Iolite most commonly occurs in shades of blue to gray

Tourmalated Quartz is clear Quartz that has formed with Black Tourmaline

Crazy Lace Agate is a banded Chalcedony that naturally occurs as golden brown with layers of pink

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Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Cantera Opal Iolite most commonly occurs inIolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called pleochroism, which means that it can appear to be different colors as it shifts in the light. According to Norse legend, Viking explorers used thin pieces of Iolite as the worlds first polarizing lens to help them determine the exact location of the sun for navigation.